The stackable design is genuinely useful—I fit two of these in the same cabinet space one old mug took up. The 10 oz size is right for my morning coffee without being a giant bucket, and it kept it hot the whole drive to work.
Miles★★★★★
Took this on a three-day camping trip and the stackable design meant it packed flat against my other gear instead of rattling around loose. Coffee stayed hot way longer than I expected sitting out in the morning chill.
Chloe★★★★☆
The 10 oz size is perfect for my morning coffee and it actually stacks in the cupboard instead of toppling over. Only nitpick is the lid isn't included, so it cools faster than I'd like on the walk to work.